Home / 8,539.90-12,812.85-4,381.86

Finding the Fourth Proportional to 8,539.90, 12,812.85 and 4,381.86

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Solution

The fourth proportional to 8,539.90, 12,812.85 and 4,381.86 is: 6,574.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,539.90 : 12,812.85 = 4,381.86 : x
  2. Step 2: Convert to fraction form
    8,539.90/12,812.85 = 4,381.86/x
  3. Step 3: Cross multiply
    8,539.90x = 12,812.85 × 4,381.86
  4. Step 4: Simplify right side
    8,539.90x = 56,144,162.95
  5. Step 5: Solve for x
    x = 56,144,162.95/8,539.90
  6. Step 6: Final answer
    x = 6,574.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.